应变和温度监测分布式光纤传感器系统布里渊频移分析

2016 4th International Conference on Photonics, Optics and Laser Technology (PHOTOPTICS) Pub Date : 2016-12-09 DOI:10.5220/0005842803330340

Nageswara Lalam, Wai Pang Ng, X. Dai, Qiang Wu, Yongqing Fu

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引用次数: 3

摘要

本文对单模石英光纤中的布里渊频移进行了分析。在工作波长为1550 nm的传统布里渊光时域分析(BOTDA)中，利用泵浦探针技术对BFS进行了分析。充分表征了应变和温度对BFS的影响。结果表明，BFS变化幅度分别为0.06 ΜΗz/μ-strain和1.26 MHz/oC。分析了BFS的布里渊增益变化和布里渊损耗机理。此外，我们还给出了不同温度和应变值下布里渊增益谱的布里渊线宽和峰值增益的变化。结果表明，沿传感光纤方向，BFS与应变和温度具有较强的线性关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of brillouin frequency shift in distributed optical fiber sensor system for strain and temperature monitoring

In this paper, we have analyzed Brillouin frequency shift (BFS) in single mode silica optical fiber. The BFS is analyzed in conventional Brillouin optical time domain analysis (BOTDA) at operating wavelength of 1550 nm by a pump-probe technique. The effects of strain and temperature on BFS are fully characterized. We found that, the BFS change of 0.06 ΜΗz/μ-strain and 1.26 MHz/oC, respectively. The BFS changes in Brillouin gain and Brillouin loss mechanism have been analyzed. In addition, we also presented Brillouin linewidth and peak gain variations of Brillouin gain spectrum with various temperature and strain values. The results demonstrate, the BFS have a strong linear relationship with strain and temperature along the sensing fiber.

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2016 4th International Conference on Photonics, Optics and Laser Technology (PHOTOPTICS)

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